Cita APA

National Center for Health Statistics (U.S.), & United States. Public Health Service. Vital and health statistics: Vital health stat. Ser. 13, Data eval. methods res. (Online). Washington, D.C.: U.S. Dept. of Health, Education, and Welfare, Public Health Service : For sale by the Supt. of Docs., U.S. G.P.O..

Citación estilo Chicago

National Center for Health Statistics (U.S.), y United States. Public Health Service. Vital and Health Statistics: Vital Health Stat. Ser. 13, Data Eval. Methods Res. (Online). Washington, D.C.: U.S. Dept. of Health, Education, and Welfare, Public Health Service : For sale by the Supt. of Docs., U.S. G.P.O..

Cita MLA

National Center for Health Statistics (U.S.), y United States. Public Health Service. Vital and Health Statistics: Vital Health Stat. Ser. 13, Data Eval. Methods Res. (Online). Washington, D.C.: U.S. Dept. of Health, Education, and Welfare, Public Health Service : For sale by the Supt. of Docs., U.S. G.P.O..